Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cc60b11d33ccc2c9c16b386c78d6773c80705d8600d34bd5b97c8281d63bb5c0' 
  AND token = 'OH/IYDobDupIyUjSFJcFTZ1gr9MCIeOuDNUj82ymW8U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}